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Table 2 Laboratorial and clinical results of human embryo biopsy using acid Tyrode or laser for PGD

From: Laser confers less embryo exposure than acid tyrode for embryo biopsy in preimplantation genetic diagnosis cycles: a randomized study

  ATZD LZD p
Time per embryo biopsy ab 180 30 <0.001
Total time for procedure ac 29 7.6 <0.001
Opening of incubator a 5.1 1.6 <0.001
Blastocyst 105 (49.2%) 116 (50.6%) 0.8
Transferred blastocysts a 1.9 2.1 0.3
Pregnancy 13 (36%) 18 (47%) 0.3
  1. Note: ATZD = acid tyrode zona drilling. LZD = laser zona drilling.
  2. amean
  3. bseconds
  4. cminutes